PKCS12 is commonly used when solving the problem of securely transporting a private key and certificate pair by file. wolfSSL has recently added PKCS12 parsing capabilities to the wolfSSL embedded TLS/SSL library giving the ability to securely load a certificate along with its private key from .p12 files.
PKCS12 files contain internal storage “containers”, called “SafeBags”. Each SafeBag may be individually encrypted and signed. Specific SafeBags are set aside to store certificates, private keys and CRLs however there are additional SafeBags provided to store additional data as required by the user.
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